Abstract
The results of synthesis and packing of crystallized iron-containing nanosized zeolites of MFI structure in dense and loose structures having different textural properties are reported. Data on the formation of additional meso- and macropores immediately during zeolite crystallization using polystyrene microspheres in the form of an aqueous suspension (latex) and as a dry template of closely packed particles are also presented. Advantages and disadvantages of these procedures for preparing hierarchical iron-containing MFI structure zeolites have been compared. Values of the external surface area and the total pore volume of hierarchical Fe-silicalites are significantly higher than those for a reference sample. Using the polymer template to synthesize the hierarchical material consisting of zeolite nanocrystals makes it possible can significantly reduce the synthesis time and simplify the preparation procedure.
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Original Russian Text © E.V. Parkhomchuk, K.A. Sashkina, V.N. Parmon, 2016, published in Neftekhimiya, 2016, Vol. 56, No. 3, pp. 214–221.
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Parkhomchuk, E.V., Sashkina, K.A. & Parmon, V.N. New heterogeneous catalysts based on zeolites with hierarchical pore system. Pet. Chem. 56, 197–204 (2016). https://doi.org/10.1134/S0965544116030105
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DOI: https://doi.org/10.1134/S0965544116030105